*{
    margin: 0;
    padding: 0;
}
#head{
    width: 100%;
    height: 120px;
    background-color: #d5d5d5;
    text-align: center;
}
#head span{
    line-height: 120px;
    font-size: 40px;
}
#main{
    min-height: 600px;
    width: 100%;
    background-color: #1b6d85;
}

#left{
    height: 100px;
    width: 300px;
    background-color: #eafffc;
    float: left;
}
#left a{
    text-decoration: none;
}
#content{
    height: 100px;
    width: 100%;
    background-color: green;
}

#footer{
    height: 130px;
    width: 100%;
    background-color: #f7f7f7;
    line-height: 130px;
    text-align: center;
}